net: Convert ip_set_net_ops

These pernet_operations initialize and destroy
net_generic(net, ip_set_net_id)-related data.
Since ip_set is under CONFIG_IP_SET, it's easy
to watch drivers, which depend on this config.
All of them are in net/netfilter/ipset directory,
except of net/netfilter/xt_set.c. There are no
more drivers, which use ip_set, and all of
the above don't register another pernet_operations.
Also, there are is no indirect users, as header
file include/linux/netfilter/ipset/ip_set.h does
not define indirect users by something like this:

        #ifdef CONFIG_IP_SET
        extern func(void);
        #else
        static inline func(void);
        #endif

So, there are no more pernet operations, dereferencing
net_generic(net, ip_set_net_id).

ip_set_net_ops are OK to be executed in parallel
for several net, so we mark them as async.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>

1 files changed, 4 insertions, 1 deletions

diff --git a/kernel/net/netfilter/ipset/ip_set_core.c b/kernel/net/netfilter/ipset/ip_set_core.c
index 9dccdf3..65628ae 100644
--- a/kernel/net/netfilter/ipset/ip_set_core.c
+++ b/kernel/net/netfilter/ipset/ip_set_core.c
@@ -2159,7 +2159,10 @@ static struct pernet_operations ip_set_net_ops = {
 	.exit   = ip_set_net_exit,
 #ifdef HAVE_NET_OPS_ID
 	.id	= &ip_set_net_id,
-	.size	= sizeof(struct ip_set_net)
+	.size	= sizeof(struct ip_set_net),
+#ifdef HAVE_NET_OPS_ASYNC
+	.async	= true,
+#endif
 #endif
 };